<!DOCTYPE html>
<html>
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>absolute relative 定位问题</title>
  <style type="text/css">
  body {
    margin: 20px;
  }

  .relative {
    position: relative;
    width: 400px;
    height: 200px;
    border: 1px solid #ccc;

    top: 20px;
    left: 50px;
  }

  .absolute {
    position: absolute;
    width: 200px;
    height: 100px;
    border: 1px solid blue;
    /*top: 20px;*/
    /*left: 50px;*/
  }
  </style>
</head>
<body>

<p>absolute 和 relative 定位问题</p>
<div class="relative">
  <div class="absolute">
    this is absolute
  </div>
  <!--  <p style="right: 10px; position: absolute;"> parent</p>-->
</div>

</body>
</html>
